相关实验视频
Updated: Sep 11, 2025

09:55
In vitro Cell Migration and Invasion Assays
Published on: June 1, 2014
139.0K
准胆固醇依赖的Piezo1激活会影响黑色素瘤细胞中的Amoeboid迁移
Sylvia Kuang1, Alleah Abrenica1, Neelakshi Kar1
1Department of Regenerative and Cancer Cell Biology, Albany Medical College, 47 New Scotland Ave, Albany, NY 12208.
bioRxiv : the preprint server for biology
|August 12, 2025
概括
类他类药物通过降低胆固醇来抑制黑色素瘤细胞迁移,这会通过Piezo1.1.扰乱细胞通过Piezo1.1.感知受限的感知. 准胆固醇代谢可能为抗癌转移提供新的治疗策略.
科学领域:
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
- 生物化学 生物化学
背景情况:
- 癌细胞利用基于血栓的迁移来导航瘤微环境.
- 由血栓形成驱动的阿米移动是癌细胞运动的一个关键机制.
- 了解癌细胞迁移的调节者对于开发抗转移疗法至关重要.
研究的目的:
- 为了确定抑制bleb形成,从而抑制癌细胞迁移的药物.
- 研究细胞内胆固醇和Piezo1机械敏感通道在癌细胞在封闭环境中的迁移中的作用.
- 探索针对黑色素瘤中的胆固醇代谢的治疗潜力.
主要方法:
- 现型药物查以识别血栓形成的抑制剂.
- 在封闭的微环境中评估黑色素瘤细胞迁移.
- 测量细胞内 (Ca2+) 水平和血膜张力.
- 分析胆固醇生物合成酶水平与患者存活率之间的相关性.
主要成果:
- 定类药物 (Fluvastatin,Pitavastatin) 被确定为黑色素瘤细胞中斑块形成和阿米移动的抑制剂.
- 通过他类药物降低细胞内胆固醇水平破坏了Piezo1介导的机械感知,降低了细胞内Ca2+.
- 胆固醇补充或Piezo1激活在封闭的环境中拯救了迁移,证实了它们的功能关系.
- 胆固醇生物合成酶的水平升高与黑色素瘤患者的存活率下降相关.
结论:
- 胆固醇对于癌细胞通过Piezo1通道感知受困的作用至关重要.
- 类他类药物通过向胆固醇-Piezo1-Ca2+轴来抑制黑色素瘤细胞迁移.
- 胆固醇的生物合成或吸收是抑制癌症转移的有希望的治疗标.
相关概念视频
Cancer Cell Migration through Invadopodia
2.4K
Invadosome is a broad category of cell surface structures with proteolytic activity that degrades the extracellular matrix (ECM). Invadosomes are present in normal cell types, including macrophages, endothelial cells, and neurons, as well as tumor cells. Although the macrophage podosomes and tumor cell invadopodia are classified as invadosomes, they have different structures, molecular pathways, and functions. Podosomes are short structures that last for a few minutes. However,...
2.4K
Role of Myosin in Cell Migration
2.4K
Myosins are multimeric motor proteins involved in various cellular processes such as migration, adhesion, and proliferation. Myosin II is the most common type in animal cells, which binds and cross-links actin filaments.
Myosin II is a hexamer comprising two heavy chains with globular heads and coiled-coil tails, two regulatory light chains, and two essential light chains. The ATPase sites on the myosin heads hydrolyze ATP, and the released phosphate generates the force for contraction....
Myosin II is a hexamer comprising two heavy chains with globular heads and coiled-coil tails, two regulatory light chains, and two essential light chains. The ATPase sites on the myosin heads hydrolyze ATP, and the released phosphate generates the force for contraction....
2.4K
Cell Polarization by Rho Proteins
2.8K
Cell polarity is the asymmetric distribution of cellular and membrane components, making one side of the cell different from the other. This polarity is essential to many processes such as embryogenesis, axon migration, glucose transport across epithelial cells, and directional cell migration. A migrating cell responds to intracellular or extracellular signals via molecular cascades that reorganize the actin cytoskeleton to establish this polarity. In these cells, the Rho family proteins Cdc42,...
2.8K
Mechanism of Lamellipodia Formation
2.7K
Cells migrating in response to external stimuli form lamellipodia, which are thin membrane protrusions supported by a mesh of linked, branched, or unbranched actin filaments. These actin filaments interact with myosin motor proteins, creating the dynamic actomyosin complex within the cytoskeleton. Contractility, or the ability to generate contractile stress, is inherent to the actomyosin complex. It helps cells detect the stiffness of the surrounding ECM and exert contractile force for...
2.7K
Cell Migration
17.2K
Cell migration, the process by which cells move from one location to another, is essential for the proper development and viability of organisms throughout their life. When cells are not able to migrate properly to their ordained locations, various disorders may occur. For example, disruption in cell migration causes chronic inflammatory diseases such as arthritis.
17.2K
Actin Polymerization and Cell Motility
5.4K
Actin is a family of globular proteins that are highly abundant in eukaryotic cells. It makes up approximately 1-5% of total cell protein concentration. Actin monomers polymerize to form a complex network of polarized filaments, the actin cytoskeleton, that plays a crucial role in many cellular processes, including cell motility, division, endocytosis, and metastasis of cancer cells.
Actin cytoskeleton dynamics can produce pushing, pulling, and resistance forces that help the cell to migrate....
Actin cytoskeleton dynamics can produce pushing, pulling, and resistance forces that help the cell to migrate....
5.4K

